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Homogenizer and multipass pump beam combination for quasi-longitudinally diode-pumped solid-state lasers
Eric Bartnicki1, Gilbert L Bourdet, Michel Ynard
1CEP/LOT/LMO, 16 bis Avenue Prieur de la Côte d'Or, 94114 Arcueil Cedex, France. eric.bartnicki@dga.defense.gouv.fr
Applied Optics
|October 13, 2007
Summary
A novel apparatus uses a kaleidoscope and mirrors for homogeneous and multipass pumping in laser systems. This design enhances pump power utilization by reflecting light back into the amplifier medium.
Area of Science:
- Optics and Photonics
- Laser Physics
- Materials Science
Background:
- Effective pumping is crucial for laser performance.
- Homogeneous and multipass pumping strategies aim to improve energy deposition and efficiency.
- Existing methods may face limitations in beam uniformity and power recycling.
Purpose of the Study:
- To introduce a new apparatus for laser pumping.
- To achieve both beam homogeneity and multipass pumping capabilities.
- To enhance the efficiency of pump power utilization in laser amplifiers.
Main Methods:
- The apparatus employs a square-section kaleidoscope constructed from a transparent medium.
- Mirrors with central transparent holes are integrated at the kaleidoscope's terminal faces.
- The design facilitates the homogenization of the pump beam and recycling of reflected pump power.
Main Results:
- The kaleidoscope effectively homogenizes the pump beam.
- The integrated mirrors enable multipass pumping by redirecting reflected pump light.
- The apparatus demonstrates efficient utilization of pump power through reflection and recirculation.
Conclusions:
- The developed apparatus offers a promising solution for homogeneous and multipass pumping.
- This design can lead to improved laser amplifier performance and efficiency.
- The innovative use of a kaleidoscope and mirrors enhances pump light management.
